Air brush or paint spray device



Jan. 30, 1934. J SCHMIDT I 1,945,298

AIR BRUSH OR PAINT SPRAY DEVICE Filed Sept. 21, 1931 mgm ATTORNEY$Patented Jan. 30, 1934 UNITED STATES PATENT OFFICE Application September21, 1931 Serial No. 564,159

Claims. (Cl. 91-45) The present invention relates to an improved airbrush or paint spray device especially adapted for atomizing or sprayingpaint on the surfaces of houses, or any other surface on which paint isto be applied, and the essential purpose of the invention is to moreequally and evenly distribute the paint over a wide area giving a moreuniform tone.

Another purpose is to simplify, improve and render more practical thecombined spray and paint brush embodied in the United States LettersPatent to John G. Schmidt patented June 24, 1924, Patent No. 1,498,759,the essential reason for improving this patent involves in particular anair brush or spray device head, which comprises a plurality of separablesections, which allows the device or air brush to be more easily andconveniently cleaned, by disassembling the device and depositingtheseveral separable 0 sections in a cleaning fluid, such as gasoline,

turpentine or the like, whichwill tend to soften and eat away or removethe paint from the interior surfaces of the various sections, such paintwhen softened and loosened can be easily scrubbed 01f bygasoline,turpentine or the like. In this manner the several sections of thedevice can be very easily and quickly cleaned, enabling the device to beused from one color or shade to another, thereby especially saving timeand a 0 great deal of labor, which is a substantial and veryinconvenient annoyance involved in the above mentioned United StatesPatent.

Another purpose is to provide an air brush or spray device, which is afurther improvement 5 over the above mentioned United States LettersPatent, in that this present invention eliminates the use of bristlebrushes which are shown and claimed in said herein identified patent,thereby simplifying and avoiding the combination between the bristlebrushes and the spraying construction of the device.

A further purpose is to provide in an article of this kind an air brushor spray device consisting of a plurality of separable sections, whichpermit very quick and easy access to the paint reservoir or chamber, aswell as a very quick and easy access to the air chamber or reservoir, sothat such reservoirs may be ,easily and very quickly cleaned.

A still further purpose is to provide, in an article of manufacture ofthis kind, a screen overlying the paint reservoir or chamber, the screenbeing vulcanized or otherwise fastened to a suitable washer between thesection carrying the spray nozzles and the paint reservoir section, the

of Figure 1.

reception of the locking screws 8,

screen acting to prevent foreign matter from entering the nozzles withthe paint and thereby avoiding obstructing the passages through thenozzles.

It is also the purpose of the present invention to provide improvedmeans for locating orfastening the several sections together, inconjunction with means to retain the sections in register. 7

It is to be understood that the particulars'herein given are in no waylimitative, and that while Q still keeping within the scope of theinvention, any desired modification of details and proportions may bemade, in the construction of the appliance'accordingto circumstances;The invention comprises further features and 7Q combination of parts tobe hereinafter set forth, shown in the drawing and claimed:

. In the drawing: V

Figure 1 is a view in elevation of the improved air brush or supplydevice constructed in accord ance of the invention. 7 t Figure 2 isalongitudinal sectional view through the head showing the severalsections, and illustrating the paint or other fluid and air pipesconnected to the head, with valves for controlling the fluid and the airwith operating means connected to the valves.

Figure 3 is a cross sectional view on line 3-3 Referring more especiallyto the drawing, 1 ,85 identifies the improved air brush'or spray devicehead,'which comprises the air reservoir section 2, the paint reservoirsection 3, and the intermediate nozzle section 4. 7 7

It is obvious that the air brush or spray device may be of any size, orany shape, and constructed of any suitable metal, in the presentinstance preferably aluminum. 7' I The air reservoir section 2 has anair chamber 5, which: may be any depth and of any length according tothe length of and the number of spray nozzles. The section 2 adjacentits marginal edge is provided with a plurality of slots 6 havingadjoining lugs 7 suitably spaced for the which are pivoted at 9 betweenthe lugs. The screws when the several sections are put together engagein slots 10 and 11 formed in the marginal edges of the intermediatesection 4 and the paint reservoir section 3, the screws having nutswhich are adjusted to bear against the surface of the reservoir section3 to hold the several sections closely 7 of any foreign matter orparticles prior to passthrough the paint reservoir,

which may -or may ing through a plurality of nozzles 16. The paint orother material first enters a chamber or reservoir 1'7, and is insures afluid tight joint between-the intermediate section and the reservoirsection.

The air reservoir section 2 has an air chamber or reservoir 5 throughwhich the several nozzles 16 pass, said nozzles having tapered ends 19,which enter depressions 20 (which are similarly sions, which arethreaded into "the intermediate section, the reduced extensions beingidentified 'by the numeral 22.

A suitable tube 23 is threaded through the wall of the paint reservoirsection 'andzsufli'ciently in order to thread at into the intermediatesection, there :being a lock nut 25 to secure the tube 23 in place. Thistube 23 connects by means :of a suitable hose 26 to a source of airsupply not shown, to inject air under pressure in the air reservo'r 5.The tube "23 passes through a handle 27 and is provided with a valve 128and operating means .29 therefor, for controlling the supply of :air.

A tube or pipe 30 is threaded into the wall of the paint reservoirsection 3 for feeding paint 'or' 'ot-her into "the reservoir 1'7, a locknut 31 carried =byithe tube '30 to insure retaining it to the section'3. The tube 30 has .a suitable valve 32 provided with controlling andoperating means 33 for regulatingthe supply @of paint,

not be under pressure. Howeverithe air fed to the air reservoir is at:all times under pressure, and it is obvious any number of pounds of airpressure may be used it depending entirely on -the size of the air brush:or :spray nozzle, and the amo t of paint or other fluid required "incovering various'surfacesl It is obvious that when this air brush :orspray device is used -'on the outside there may be .at times more orless air "currents, tending to :scatter the spray, which would'cause anuneven distribution of and ,loss of material. In this case and to avoidthis loss itis the aim to provide guards -'0r shields 34, which may beconstructed of any suitable material, preferably rubber -or leather,though not necessarily, for the reason 'th'atthe'guards may be in theform of brushes. ht'any rate such devices are to shield the sprayagainst air currents, and thereby insure applying the materialdirect=to=the surface to becovered without loss; As an example of one means ofthen screened OllfiStl'QiIlfid by section and an intermediate section,

the straining element, the rubber washerof which attaching the guards,though not as a necessity, the guards are fastened between the airreservoir and the intermediate section as identified at 35.

While it is in most cases unnecessary to use such wind shields the aboveattaching means enabling easy attachment is provided. The use of thesewind guards is entirely optional with the person using the spray anddoes not affect the advantages claimed for the spraying device itself.

The invention having claimed is:

v1. In an .air brush prising a fluid reservoir section, an

been set forth, what is or spray device, a head comair reservoir saidfluid being assembled in relation fornfi-ng reservoirs for fluid and airand provided with bottoms, a plurality of nozzles carried by theintermediate section and passing through the air reservoir and providedwith tapered ends, the bottom of the air reservoir having tapered"outlets, in which the tapered ends of the nozzles are spaced, thenozzles communicating with the fluid reservoir, means carried Lby'thefluid reservoirsection and passing through the other two sections forholding all three sections in register, and means carried :by the airreservoir section and cooperating with the other two sections forlocking the sections in register, and means for supplying the respectivereservoirs with fluid and air, whereby the fluid may be sprayed oratomized upon a surface to be covered.

.2. An air brush or spray device comprising a head consisting of aplurality of separable sections, two I outer sections and anintermediate :section, one of the outer sections being in assembledrelation to form an'air reservoir, the other outer section having afluid reservoir, said air reservoir having a bottom provided withtaperedoutlets, the intermediate section having a plurality :of outlet :nozzlescommunicating with the fluid reservoir and having ends spaced within thetapered outlets, and means for separably connecting the several sectionswhereby they maybe and. air reservoir sections 'eas'ily disassembled:for cleaning purposes, means connected to the fluid reservoir sectionand pass- :ing through said fluid reservoir and threaded into theintermediatesection and communicating with the air reservoir tosupplyair under pressure thereto, and means connected to the fluid reservoir:section and communicating with its reservoir for supplying fluidthereto, said air and fluid supplying means comprising tubes, a handlejointly .connecting the two tubes, and means associated with the tubesfor controlling the supply of air and fluid.

3. air brush. or spray device comprising a head consisting of aplurality of separable sections, two outer sections and an intermediatesection, bled relation to form an air reservoir, the "other :outersection having a fluid reservoir, said air reservoir having a bottomhaving tapered outlets, the intermediate section having a plurality ofoutlet nozzles communicating with the fluid reservoir and having endsspaced within the tapered outlets, and means for separably connectingthe several sections whereby they :may be easily disassembled forcleaning purposes,

one of the outer sections :being in assemwashers between the severalsections to insure 145 head consisting of a plurality of separablesec-T50 tions, two outer sections and an intermediate section, one ofthe outer sections being in assembled relation to form an air reservoir,the other outer section having a fluid reservoir, said air reservoirhaving a bottom having tapered outlets, the intermediate section havinga plurality of outlet nozzles communicating with the fluid reservoir andhaving ends spaced within the tapered outlets, and means for separablyconnecting the several sections whereby they may be easily disassembledfor cleaning purposes, washers between the several sections to insureair and fluid tight joints therebetween, the washer between the fluidreservoir and the intermediate section carrying a straining element, andmeans carried by the fluid reservoir section and engaged through theintermediate section and into the air reservoir section, for holding theseveral sections in register while the connecting means between theseveral sections are being adjusted.

5. An air brush or spray device comprising a head consisting of aplurality of separable sections, two outer sections and an intermediatesecof outlet nozzles communicating with the fluid reservoir and havingends spaced within the tapered outlets, and means for separablyconnecting the several sections whereby they may be easily disassembledfor cleaning purposes, means connected to the fluid reservoir sectionand passing through said fluid reservoir and-threaded to theintermediate section and communicating with the air reservoir to supplyair under pressure thereto, and means connected to the fluid reservoirsection and communicating with its reservoir for supplying fluidthereto, washersbetween the several sections to insure air and fluidtight joints therebetween, the washer between the fluid reservoir andthe intermediate section carrying a straining element.

JOHN G. SCHMIDT.

